50results about How to "High precision assembly" patented technology

A scroll compressor provided by the invention is capable of positioning and assembling a fixed scroll and an orbiting scroll with high precision with the elimination of a centering process or a fastening bolt during an assembling process. The scroll compressor includes a hermetically sealed container and a compression mechanism having a frame, a fixed scroll and an orbiting scroll. The fixed scroll includes a cylindrical portion formed in a circumferential direction on an outer circumferential side of a fixed wrap, a flange provided in the circumferential direction further outside of the cylindrical portion, and a first hole provided in the flange in an axial direction. The frame includes an inner circumferential surface into which the cylindrical portion of the fixed scroll is inserted and fitted, a flange which is provided in the circumferential direction further outside of the inner circumferential surface, and a second hole in the axial direction which is provided in a position ofthe flange opposite to the first hole. The scroll compressor further comprises: a knock pin that is inserted in the first hole and the second hole to prevent the frame and the fixed scroll from beingdisplaced in a rotational direction; and a fixing unit that fixes the frame and the fixed scroll to the hermetically sealed container.

The invention provides a control method for volume-adjustable non-destructive seeding. A volume-adjustable non-destructive seeding device is used to control non-destructive seeding, in the volume-adjustable non-destructive seeding device, a seeding control part and a seed protecting part are respectively arranged in a support, the seed protecting part is in contact with the seeding control part, the interior of the support is provided with a support circular arc section in contact with the seeding control part, and the seeding control part is composed of a seeding wheel main body, a limit adjustment component, a cavity adjustment component, a lateral cavity component, a floating drive component and a drive main shaft; and a left seed filling channel, a right seed filling channel, a seedingwheel seed filling channel and a seed filling cavity which can complete seeding and have adjustable volumes are formed in the support through the above structure, and a left cavity cylinder and a right cavity cylinder in the lateral cavity component can communicate with the seeding wheel seed filling channel after being docked. The limit adjustment component is adjusted to realize dynamic adjustment of a volume of the seed filling cavity, quantified seeds are further received into the seed filling cavity to avoid hard contact with the seed protecting part to cause mechanical damage, so that the non-destructive operation is realized.

A nozzle position correction method of an electronic device assembly device can position the nozzle with higher precision. The electronic device assembly device has: a base; an assembly head with an adsorption nozzle; an X-axis guide rail guiding the assembly head along the X-axis direction; a Y-axis guide rail guiding the X-axis guide rail along the Y-axis direction; displaying a plurality of identification marks M1-Mn Marker display section; first and second cameras provided on the assembly head. This nozzle position correction method includes: a photographing process of photographing each identification mark with two cameras; a deviation amount acquisition process of obtaining the photographed position deviation amount for each camera; A Y-axis deviation determination process to calculate the deviation in the Y-axis direction from the imaging position deviation in the axial direction and the relative positional relationship between each camera and the nozzle; a positioning process to position the nozzle by correcting the calculated deviation.

Disclosed is a hinge device for openably and closably connecting one member and the other member, including: a base member fixed to the one member; a movable shaft that is rotatably supported by the base member and to which the other member is fixed; a leaf spring member having a curved portion and non-rotatably but axially movably inserted onto the movable shaft; and a fixing plate inserted onto the movable shaft such that the fixing plate does not rotate when the movable shaft rotates but is axially movable, the fixing plate having at least two protrusions provided on its surface in contact with the leaf spring member. The leaf spring member and the fixing plate are pressed into contact with each other for relative rotation therebetween.

An assembling method of a stator blade ring segment which can suppress the risks of thermal deformation and deterioration of strength, secure a degree of freedom of profile, and enhance the compression performance of a compressor. Furthermore, welding is provided in which a welding object can be prevented from floating from a groove or a recess at the time of welding, and welding can be carried out well. Sidewall portions (50b) on the opposite sides are formed to incline against the bottom (50a) so that the width of a groove (50) formed in each segment split body (41) decreases gradually fromthe outer circumferential side toward the bottom(50a). A coupling member (42) has such a cross-section that its width becomes largest at a protrusion (42b) located at an intermediate part in the thickness direction. When the coupling member (42) is placed in the groove (50), the protrusions (42b) on the opposite sides abut against or approach the sidewall portion (50b) of the groove (50), a space(100) is formed on the bottom (50a) side of the groove (50) and a groove (200) of substantially V-shaped cross-section is formed on the side away from the bottom (50a) of the groove (50).

On a mounting substrate 101, an LD element 102 and a wavelength converter element 103 are mounted as optical elements. An end of an optical fiber 105 is fixed, at a given length, in a fiber anchoring groove 301 of a sub-substrate 104. The sub-substrate 104 is mounted to the mounting substrate 101 with the surface supporting the optical fiber 105 opposing thereto, and the wavelength converter element 103 and the optical fiber 105 being coupled. By mounting of the sub-substrate 104 to the mounting substrate 101, the coupling position of the output end of the wavelength converter element 103 and the input end of the optical fiber 105 is provided an internal position that is a given distance from the end of mounting substrate 101.

The circuit board has a surface mount LED with a lens on the circuit board. A conductive portion and remaining space in the periphery of the LED are covered with solid copper foil so that reflectance of light and a heat dissipation effect are enhanced. In addition, layer structures between the circuit board and an assembled component are the same between contact portions with the assembled component so that tilt in mounting the board is suppressed. As a result, the circuit board having mounted thereon the surface mount LED having high directivity can be accurately mounted on the assembled component, tilt of an optical axis can be suppressed, the reflectance of light from the LED can be increased, and the heat dissipation effect can be enhanced.